It appears to be a pretty flat and smooth electret LDC with cardioid pattern, but it's primary strength is its very high SPL capability 149dB, or 159 with pad switched in), making it a good choice for loud guitar cabs, brass, close drum mics, etc.

Self-noise is a little high for an LDC at 11dBA, but not a problem for the intended role with loud sources, and still much less than most SDCs. Sensitivity is sensible at 7mV/Pa.